/* 基础样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.language-switcher {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.language-switcher button {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: bold;
}

.language-switcher button.active {
    background: var(--white);
    color: var(--primary-color);
}

.language-switcher button:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 联系信息部分 */
.contact-section, .cooperation-section, .faq-section {
    margin-bottom: 3rem;
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.contact-methods, .cooperation-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-method, .cooperation-option {
    text-align: center;
    padding: 1.5rem;
    border-radius: 8px;
    transition: var(--transition);
}

.contact-method {
    background: var(--light-color);
}

.contact-method:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.contact-method i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-method h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.contact-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
}

.contact-link:hover {
    color: var(--secondary-color);
}

.wechat-qr img {
    width: 150px;
    height: 150px;
    margin: 1rem auto;
    display: block;
}

/* 合作部分 */
.cooperation-option {
    background: var(--white);
    border: 1px solid #eee;
    transition: var(--transition);
}

.cooperation-option:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-color);
}

.icon-box {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.btn {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
    font-weight: bold;
}

.btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 常见问题部分 */
.faq-item {
    margin-bottom: 1rem;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    background: var(--light-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question h3 {
    font-size: 1.2rem;
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding: 1.5rem 0;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

/* 页脚样式 */
footer {
    background: var(--dark-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-methods, .cooperation-options {
        grid-template-columns: 1fr;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
}